//
//  UIImage+Extension.swift
//  XinLangWeiBo
//
//  Created by lei on 17/2/10.
//  Copyright © 2017年 lei. All rights reserved.
//

import UIKit

extension UIButton {
    
    /// 遍历构造函数
    ///
    /// - parameter imageName:     图像名称
    /// - parameter backImageName: 背景图像名称
    ///
    /// - returns: UIButton
    convenience init(imageName: String, backImageName:String) {
        self.init()
        
        setImage(UIImage(named: imageName), forState: UIControlState.Normal)
        setImage(UIImage(named: imageName + "_highlighted"), forState: UIControlState.Highlighted)
        setBackgroundImage(UIImage(named: backImageName), forState: UIControlState.Normal)
        setBackgroundImage(UIImage(named: backImageName + "_highlighted"), forState: UIControlState.Highlighted)
        
        // 让按钮根据背景图片调整大小
        sizeToFit()
    }
    
    /// 遍历构造函数
    ///
    /// - parameter title:     title
    /// - parameter color:     color
    /// - parameter imageName: imageName
    ///
    /// - returns: UIButton
    convenience init(title: String, color: UIColor, imageName: String) {
        
        self.init()
        
        setTitle(title, forState: .Normal)
        
        setTitleColor(color, forState: .Normal)
        
        setBackgroundImage(UIImage(named: imageName), forState: .Normal)
  
    }
    
}












